Two types of fog lamps are installed on the car, depending on the configuration
а) - up to 32 configurations (until February 2009); GLS: 1 - fog lamp housing; 2 - latch; 3 - lamp; 4 - protective cover; 5 - lamp block
b) - on a car with configuration 55 (from March 2009): 1 - front bumper; 2 - fog lamp; 3 - lamp; 4 - front wiring harness block
In the fog lamp 1 (Fig. 1a) (GLS equipment), change the burned-out lamp 3 after removing the headlight from the car.
To remove the lamp, remove the protective rubber cover 4 and remove the antennae of the spring latch 2 from the grooves. To make it easier to dismantle the lamp, first remove the block 5 from it.
To replace the bulb in the fog lamp 2 (Fig. 1b) (complete set 55, GLC version), disconnect the block 4 of the front wiring harness from the lamp and remove the lamp 3 from the headlight housing.
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Remove the front bumper mudguard for this:
Turn the front wheel or remove it.
Remove the two screws at the bottom of the bumper
Remove four screws inside the wing arch
Turn off two nuts with a 10 head
Remove the mudguard.
After removing the mudguard, we proceed to replace the fog lamp bulb
We press the two clamps of the wire block
Disconnect the block from the lamp
By turning the bulb counterclockwise, remove it from the headlight housing
Install the new lamp in reverse order
Removing the fog lamp housing
Use a Phillips screwdriver to unscrew the three screws securing the headlight to the bumper
Remove headlight
Using a screwdriver, we press the two latches of the block and disconnect the block of wires from the headlight lamp.
If necessary, use the Torx 20 key to adjust the direction of the headlight beam through the hole in the bumper.
Install the fog lamp in reverse order.
The right headlight is marked with the letter R; the left headlight is marked with the letter L.
Adjusting the fog lights
Headlights are adjusted using optical instruments.
If they are not available, then the adjustment can be carried out on a horizontal platform using a screen. The unevenness of the working platform should be no more than 3 mm per 1 meter.
Put a fully fueled and equipped car, with a load of 735 N (75 kgf) on the driver's seat, on a flat horizontal area 10 m from the screen (shield about 2x1 m in size, etc.) so that the axis of the car is to him perpendicular.
Before laying out the screen, make sure that the air pressure in the tires is 0.19 MPa (1.9 kgf / cm 2), and then press the vehicle suspension 2-3 times to self-adjust its components.
Check and, if necessary, adjust the direction of the fog lamps.
In this case, the upper cut-off boundary of the fog lamp beam must be parallel to the plane of the working platform on which the car is installed.
The headlights are adjusted by turning screw 1 (Fig. ), which turns the optical element in the horizontal plane.
The luminous intensity of fog lamps, measured in a vertical plane passing through the reference axis, should be no more than 625 cd in the direction of 3º upwards from the position of the cut-off line.
If the light intensity does not match the above value, readjust at least 0.5% in the vertical direction of the 69" angle and measure the light intensity.